Mazda Mazda6 - Correction Procedure; Engine Tune-Up; Engine Tune-Up Preparation; Idle Speed Inspection

F2–34
ENGINE TUNE-UP
ENGINE TUNE-UP PREPARATION
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1. Start the engine and warm up completely.
2. Verify that the gear is in neutral position.
3. Verify that the accelerator pedal is released.
4. Turn off the A/C switch.
5. Turn off all electrical loads.
6. Verify that no DTC is present.
7. Connect the WDS or equivalent to the DLC-2.
8. Wait until the electrical fan stops.
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IDLE SPEED INSPECTION
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1. Perform “Engine Tune-up Preparation”. (See F2–34 ENGINE TUNE-UP PREPARATION.)
2. Monitor the RPM PID using the WDS or equivalent.
3. Verify that engine speed is within specification.
• If not as specified, inspect the following.
— Suction control valve
— Fuel injector
— Accelerator position sensor
— ECT sensor
— Fuel pressure sensor
— CMP sensor
— CKP sensor
Specification
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CORRECTION PROCEDURE
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Note
• Perform each procedure by selecting the corresponding menu on the WDS screen. These procedures
appear when “Powertrain” in the “Toolbox tab” is selected.
Correction after Parts Installation
Note
• Perform this procedure after replacing the PCM and/or fuel injectors.
1. Perform “Engine Tune-up Preparation”. (See F2–34 ENGINE TUNE-UP PREPARATION.)
2. Perform “Correction after Parts Installation” using the WDS or equivalent.
ENGINE TUNE-UP
DLC-2
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Load condition Engine speed (rpm)
No load 725—825 (775±50)
A/C switch is on 725—825 (775±50)